<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>伪随机背景</title>
  <style>
    body {
      /**
        * https://dabblet.com/gist/4b4ad05f4c1b5259066f
        * Pseudorandom stripes
        */

      background: hsl(20, 40%, 90%);
      background-image:
        linear-gradient(90deg, #fb3 11px, transparent 0),
        linear-gradient(90deg, #ab4 23px, transparent 0),
        linear-gradient(90deg, #655 23px, transparent 0);
      background-size: 83px 100%, 61px 100%, 41px 100%;
    }
  </style>
</head>
<body>

</body>
</html>
